Of 25 consecutive patients with spontaneous CSF leaks treated with epidural blood patch (EBP), nine patients (36%) responded well to the first EBP. Of 15 patients who received a second EBP, five became asymptomatic (33%). Of eight patients who received three or more EBP (mean 4), four patients (50%) responded well.
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Sencakova et al. (2001) studied this question.
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